[2, 3]-cyclohex-4&#39;-en-3&#39;-one derivatives of 17beta-hydroxy-androstanes



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nits its s 077 483 an-evenonax-i'tnh-sionn nnnrvarrvns on Y/B-HYDRGXY-ANDRUSTANES -f red A. Kincl, Mexico City, Mexico, assignor, by mesne assignments, to Syntex Corporation, a corporation of Panama N Drawing. Filed June 8, 1950, Ser. No. 34,634

Claims priority, application Mexico (Pet. 20, 19579 3 tjlairns. (Cl. 266-3974!) In the above formula, Z indicates a single or double bond; R represents hydrogen or methyl; R represents hydrogen or an aliphatic hydrocarbon radical, saturated or unsaturated, containing up to 8 carbon atoms; and R represents hydrogen or an acyl group derivedfrom a hydrocarbon carboxylic acid containing up to 12 carbon atoms saturated orunsaturated, of straight chain or branched chain aliphatic, cyclic, cyclic-aliphatic, aromatic and which may be substituted by functional groups such ashydroxyl, acyloxy of up to 12 carbon atoms, alkoxy of up to 8 carbon atoms, amino, nitro or halogen. Typical hydrocarbon radicals at C-l7u are the methyl, ethyl,

propyl, butyl, vinyl, propen(1)yl, buten(1)yl, ethinyl and buten(2)yl; typical acyl groups at 0-176 arethose derived from acetic, propionic, isobutyric, hexanoic, succinic, benzoic, trimethylacetic, aminoacetic, phenoxyacetic, cyclopentylpropionic and B-cnloropropionic acids. R represents hydrogen or a lower alkyl group.

The novel compounds of the present invention which may be considered as cyclopentanoperhydrobenzanthracene derivatives, exhibit anabolic activity together with a minimum of androgenicactivity as well as exhibit anti-gonadotrophic activity and anti-estrogenic activity.

These compounds are further useful for relief of radiation nausea, treatment of osteoporosis, reduction of the incidence of dentalcaries, and therapy involving debilitating diseases.

The following equation illustrates in part a method for the preparation of the novel compounds:

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Patented Felo. 12, 1963 OH I R FIT methyl-vinyl ketone amine In the above equation, Z, R and R have the same meaning as previously set forth.

in practicing the process above outlined, a Z-hydroxymethylene-dihydroallotestosterone or a Z-hydroxymethylens-testosterone, with or without an aliphatic hydrocarbon substituent at C-l7a, or the l9-nor derivatives of theforegoing, disclosed by Ringoldet al. in I. Am. Chem. Soc. 81, 427 (1959), and in copendiug applications Serial No. 3,746, filed January 21, 1960, and Serial No. 3,748, filed January 21, 1960, which in turn are c-ontinuationsin-part of earlier filed aplications as set forth therein, is condensed with a methyl vinyl ketone in the presence of small amounts of a tertiary. amine, such as triethylamine, and then subjected to an alkaline treatment. Alternatively the methyl vinyl ketone may be prepared in situ, as for example, the reaction is effected with 4-diethylaminobutanone(2) and sodarnide in absolute ethanol or with 4-chlorobutanone(2) in n-propyl alcohol in the presence of sodium n-propylate. The methyl-vinyl ketone may be substituted by lower alkyl substituents. Thus ketones such as 3-penten-2-one, l-hexen-B-oue, l-penten- 3-one, Z-methyl-bbuten-S-one and 2-ethy1-1-buten-3-one may be condensed with the Z-hydroxymethylene compounds to afford the novel compounds of the present invention containing alkyl substituents in the cyclohexenone moiety. For example, ketones of the following types, CH -CO--CH=CH--R R -CH CO-CH=CH and CH CO-C(CH =CH wherein R is lower alkyl, form the following derivatives, respectively:

but logo CHal The formation of the disubstituted and trisubstituted compounds are obtained when ketones such as 3-methy1- 3-penten-2-one, 2-hexen-4-one, '2-rnethyl-1-penten-3-one .or 3-methyl-2-heXen-4-one are employed, which compounds may be illustrated, respectively, bythe following ac /mes The following examples serve to illustrate but are not intended to limit the scope of the present invention:

Example I A mixture of 5 g. of 2-hydroxymethylene-dihydroallotosterone and 800 mg. of dry and recently distilled methylvinylketone was cooled to C. and treated with drops of triethylamine; the mixture was kept at 0 C. for 1 hour and then at room temperature for 3 days. It was then diluted with ether and repeatedly washed with 5% aqueous sodium hydroxide solution to remove the unreacted hydroxymethylene compound in the form of its sodium salt. The ether was evaporated and the residue was dissolved in 400 cc. of aqueous methanol (50:50) containing 4 g. of sodium hydroxide; after refluxing for 8 hours, the cooled mixture was diluted with water and extracted with ether. The extract was consecutively washed with dilute hydrochloric acid, saturated aqueous sodium bicarbonate solution and finally with water, dried over anhydrous sodium sulfate and the ether was evaporated. The residue crystallized from methanol to produce 17,6 hydroxy-androstane [2,3]-cyclohex-4'-en-3'- one, namely the derivative of dihydroallotestosterone sharing its carbon atoms 2 and 3 with the carbon atoms 5 and 6 of a cyclohexanone.

Example 11 A mixture of 8.64 g. of 2-hydroxyrnethylene-dihydroallotestosterone, 600 mg. of sodamide and 100 cc. of dry ether was stirred under an atmosphere of nitrogen at room temperature for two and a half hours; there was then added 4.3 g. of 4-diethylarninohutanone-(2)-methiodide in 2 cc. of absolute ethanol and the mixture was stirred for 3 hours at room temperature and then refluxed for 3 hours. The cooled mixture was poured into ice water, acidified with aqueous hydrochloric acid and extracted several times with ether. The extract was washed with water to neutral, dried over anhydrous sodium sulfate and the ether was evaporated. The residue was crystallized from methanol, thus yielding a compound having identical properties with those of the final compound of p the preceding example.

Example III To a solution of 250 mg. of sodium metal in 40 cc. of n-propanol was added 2.9 g. of Z-hydroxymethylenedihydroallotestosterone, cooled to 0 C. and treated with 1 molar equivalent of 4-chloro-butan-2-one over a period of half an hour and taking care that the temperature did not rise over 0 C., under continuous stirring. The mixture was then kept at 0 C. for 18 hours, at the end of which it was diluted with water and extracted with ether. The extract was washed with water, dried over anhydrous sodium sulfate and evaporated. Crystallization of the residue from methanol furnished a compound identical with that produced in accordance with Example I.

Example IV The methods of the preceding examples were applied to Z-hydroxy-methylene-testosterone, to produce 17fi-hydroxy-n -androstene- [2,3 -cyclohex-4'-en-3 -one.

Example V In accordance with the method of Example I, 2-hydroxymethylene-l7a-methyl-dihydroallotestosterone was converted into 17e-methyl-17fi-hydroxy-androstane-[2,3]- cyclohex- V-eny-one.

4 Example VI In accordance with the method of Example II, 2-hydroxyrnethylene-l7a-rnethyl-testosterone was converted into 17a-methyl-17p-hydroxy-A -androstene-[2,31-cyclohex-4-en-3'-one.

Example VII in accordance with the methods of Examples I-III, the 17a-ethyl-, vinyl and ethinyl derivatives of 2-hydroxymethylene-dihydroallotestosterone and of Z-hydroxymethylene-testosterone were converted into the l7e-ethyl, vinyl and ethinyl derivatives of l7d hydroxy-androstane- [2,3] cyclohex 4 en 3-one and of l7fl-hydroxy- N-androstene- 2,3 -cyclohex-4-en-3 '-one.

Example VIII In acordance with the method of Example I, Z-hydroxymethylene-l7a-methy1-19-nor dihydroallotestosterone was converted into l7a-methyl-l7 8-hydroxy-l9-nor-androstane-[2,3]-cyclohex-4-en-3-one.

Example IX In accordane with the method of Example ll, 2- hydroxymethylene-19-nor-testosterone was transformed into 17fl-hydroxy-19-nor-A -androstene-[2,3] cycloheX- 4-en-3'-one.

Example X By substituting in the method of Example I, 3-penten- 2-one for the methyl vinyl ketone, there was obtained by the method described in such example 17,8-hydroxy-androstane- [2,3 l-methyl) -cyclohex-4'-en-3 -one.

Example XI In accordance with the method of Example I, methyl-dihydroallotestosterone was reacted with l-hexen- 3-one to afiord l7u-methyl-l7/3-hydroxy-androstane-[2,3]- (4'-ethyl)-cyclohex-4-en-3'-one.

Example XII In accordance with the method of Example I, 2-hydroxymethylene-dihydroallotestosterone was reacted with 2-hexeu-4-one to finally furnish 17B-hydroxy-androstane- [3,2]-(l',4-dimethyl)-cyclohex-4'-en-3-one.

Example XIII 1 g. of 17 3-hydroxy-androstane-[2,3]-cyclohex-4'-en- 3'-one, obtained in Example I, was treated with approximately 1 g. of acetic anhydride in 10 cc. of pyridine at room temperature. The mixture was maintained overnight at room temperature, poured into water, heated for one hour on the steam bath, cooled and the precipitate formed was collected, washed with water and dried. Crystallization from acetone-hexane afiorded 17,8-acetoxy-androstane- [2,3 -cyclohex-4-en-3-one.

When the acetic anhydride was substituted by propionic anhydride, there was formed the corresponding propionate.

When the acetic acid was substituted by cyclopentylpropionic anhydride or a long chain acid anhydride such as that of undecenoic acid, there was used twice the amount of the anhydride and the reaction time was doubled to afiord the corresponding cyclopentylpropionate and undecenoate of 17,8-hydroxy-androstane-[2,3]-cyclo- Example XIV By substituting 17fl-hydroxy-A -androstene-[2,3]-cycloof l7fi-hydroxyandrostane- [2,3 l'-methyl) -cyelohex-4'- en-3-one and of 17B-hydroxy-androstane-[3,2]-(1',4'-dimethyl)-cyclohex-4'-en-3-one.

Example XV 1 g. of flat-methyl-17fi-hydroxy-androstane-[2,31-cyclohex-4'-en-3'-one obtained in Example V, in 50 cc. of dry benzene was treated with 1 g. of acetic anhydride in the presence of 500 mg. of p-toluenesulfonic acid at room temperature for 24 hours, then washed successively with a 5% solution of aqueous sodium carbonate and with water, dried over anhydrous sodium sulfate. The solvent was evaporated and by recrystallization of the residue from acetone-hexane, there was obtained the Not-methyl- 17,3-acetoxy-androstane-[2,3]-cyclohex-4'-en-3'-one.

When the acetic anhydride was replaced by propionic anhydride or propionic chloride, the corresponding propionate was obtained.

When undecenoic acid anhydride was substituted for the acetic anhydride, the amount of esteri-fying agent and the reaction time was increased to afford the 17-undecenoate of 1la-methyl-17,6-hydroXy-androstane-[2,3]-cyclohex-4- en-3'-one.

Example X V1 Wherein the preceding example, the l7oc-methyl-l7flhydroxy-androstane-[2,3]-cycloheX-4-en-3-one was replaced by 17a-ethinyl-l7fl-hydroxy-h -androstene-[2,3]- cyclohex-4-en-3'-one, obtained in accordance with the method described in Example II, there is obtained the corresponding acetate, propionate and undecenoate of the latter compound.

Example XVII Example XVIII In other experiments, the esterification of the products produced in Examples I through XII was conducted with other hydrocarbon carboxylic acid anhydrides containing up to 12 carbon atoms to produce the corresponding butyrates, enanthates and benzoates.

I claim:

1. A compound of the following formula:

wherein R is selected from the group consisting of hydrogen and methyl; R represents an unsaturated aliphatic hydrocarbon group containing up to 8 carbon atoms; and R is selected from the group consisting of hydrogen and a hydrocarbon carboxylic acyl group of less than 12 carbon atoms.

6. 17a vinyl17fi-hydroxy-A -androstene [2,3] cyclo hex-4-en-3'-one.

7. 17 a ethinyl-17/3-hydroxy-A -androstene-[2,3]-cyclohex-4en-3one.

8. A compound of the following formula:

wherein R is selected from the group consisting of hydrogen and methyl; R is selected from the group consisting of hydrogen and an unsaturated aliphatic hydrocarbon group containing up to 8 carbon atoms; R is selected from the group consisting of hydrogen and a hydrocarbon carboxylic acyl group of less than 12 carbon atoms; and R is selected from the group consisting of hydrogen and lower alkyl and at least one R is lower alkyl.

References Cited in the file of this patent UNITED STATES PATENTS 2,939,866 Atwater June 7, 1960 

1. A COMPOUND OF THE FOLLOWING FORMULA: 